Key management

Key authentication

Key/Config-authentication is used to solve the problem of authenticating the keys of the person (say "person B") to some other person ("person A") is talking to or trying to talk to. In other words, it is the process of assuring that the key of "person A" held by "person B" does in fact belong to "person A" and vice versa. This is usually done after the keys have been shared among the two sides over some secure channel. However, some algorithms share the keys at the time of authentication. The simplest solution for this kind of problem is for the two concerned users to communicate and exchange keys. However, for systems in which there are a large number of users or in which the users do not personally know each other (e.g., Internet shopping), this is not practical. There are various algorithms for both symmetric keys and asymmetric public key cryptography to solve this problem. (Wikipedia).

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Related pages

Key escrow | Public key fingerprint | Key-agreement protocol | Diffie–Hellman key exchange | Key distribution center | Needham–Schroeder protocol | PGP word list | Digital signature | Man-in-the-middle attack | Threshold cryptosystem | Quantum cryptography | Kerberos (protocol) | Password-authenticated key agreement | Public-key cryptography | Certificate authority | Pretty Good Privacy | Public key certificate